JP2014140440A - Dryer - Google Patents

Abstract

An object of the present invention is to provide a dryer that has a function of draining dehumidified water that has accumulated in the unlikely event and allows a certain amount of accumulated water.
A heat pump device 30 in which a rotary drum 1 that accommodates an object to be dried, a compressor 32, a radiator 33, a decompressor 34, and a heat absorber 35 are connected by a pipe 36 filled with a refrigerant, and a heat pump device 30 are provided. A unit case 31 to be accommodated, a blower 40 that blows air for drying the circulation air passages 41 and 43, and a drain pump 70 that drains dehumidified water are provided. A reverse support valve 44 for draining water is provided, and a rib is provided on the bottom surface of the unit case 31 so as to extend upward from the bottom surface 31 d and extend from the side wall 31 c to the inside of the unit case 31 to surround the reverse support valve 44. 45 is provided.
[Selection] Figure 5

Description

  The present invention relates to a dryer for drying clothes by a heat pump method.

  Conventionally, a heat pump type dryer is known. This type of dryer has a compressor, a radiator, a throttle means, and a heat absorber, and is connected by piping so that the refrigerant circulates in this order. The low-temperature, high-humidity drying air exhausted from the drying chamber first passes through the heat absorber. At this time, the drying air is cooled by the heat absorber, and moisture is condensed and dehumidified to become low-humidity air. Then, when it passes through the radiator, it is heated and becomes high-temperature air. This high-temperature, low-humidity drying air is introduced into the drying chamber and exchanges heat with the dried material in the drying chamber. The dried product is dried by this circulation (see, for example, Document 1).

  FIG. 7 is a perspective view showing a part of a unit case of a conventional dryer, and FIG. 8 is a plan view showing a part of the unit case of the conventional dryer.

  A unit case 38 that accommodates a compressor, a radiator, a throttle means, a heat absorber, and the like includes two divided members 381 and 382. A seal member 384 is sandwiched between the dividing lines 383 formed by the divided members 381 and 382 facing the outer surface of the unit case 38 to air tight the inside and outside of the unit case 38.

  In case of a sudden water pool, the drainage mechanism 101 provided in the storage section 63 of the unit case 38 is opened by the pooled water to drain the pooled water. This prevents the outside air from being sucked and ensures the function of introducing circulating air, exchanging heat and discharging.

JP 2005-304985 A

  However, the conventional configuration has a problem that the drainage means must be frequently driven before the dehumidified water level reaches the drainage mechanism.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to provide a dryer that has a function of draining dehumidified water that has accumulated and that allows a certain amount of accumulated water.

  In order to achieve the above object, a dryer according to the present invention includes a drying chamber for storing an object to be dried, a heat pump device in which a compressor, a radiator, a decompressor, and a heat absorber are connected by a pipe filled with a refrigerant, A unit case that houses the heat pump device, a blower that blows the drying air of the drying chamber, and a drain pump that drains dehumidified water, and drains the dehumidified water that overflows on the side wall below the unit case. An overflow portion is provided, and a rib is provided on the bottom surface of the unit case so as to extend upward from the bottom surface and extend from the side wall to the inside of the unit case to surround the overflow portion. Is.

  According to the above configuration, a certain amount of accumulated water can be allowed in the unit case while having a function of draining dehumidified water that has accumulated.

  The dryer of the present invention can reduce the frequency of driving the drainage pump.

Side surface sectional drawing of the dryer which concerns on Embodiment 1 of this invention. Perspective view from the rear showing a part of the dryer Perspective view of heat pump device of the dryer The top view which shows a part of heat pump apparatus and unit case of the dryer Perspective view showing a part of the unit case of the dryer Perspective view showing the unit case of the dryer A perspective view showing a part of a unit case of a conventional dryer A plan view showing a part of a unit case of a conventional dryer

  The dryer of the present invention includes a drying chamber for storing an object to be dried, a heat pump device in which a compressor, a radiator, a decompressor and a heat absorber are connected by a pipe filled with a refrigerant, and a unit case for storing the heat pump device. And a blower that blows the air for drying the air passage, and a drainage pump that drains dehumidified water, and an overflow portion that drains the overflowing dehumidified water is provided on the lower side wall of the unit case, The bottom surface of the unit case is provided with a rib extending upward from the bottom surface and extending from the side wall to the inside of the unit case so as to surround the overflow portion.

  Thereby, a certain amount of accumulated water can be allowed while having a function of draining dehumidified water that has accumulated. As a result, the frequency of driving the drain pump can be reduced.

  In the upper machine configuration, it is preferable that a drainage detection unit that detects overflow of dehumidified water is further provided, and the upper end of the rib is formed to be higher than a water level detected by the drainage detection unit.

  Thus, it is possible to detect that the dehumidified water is accumulated when the water level is detected by the drainage detection unit while accumulating a certain amount of dehumidified water. As a result, it is possible to prevent the dehumidified water from being discharged from the overflow portion to the outside of the unit case before the drainage detection portion detects it.

  In the above configuration, the overflow portion is provided on one end side of the side wall of the unit case, and the rib is provided with the overflow portion from the one end side of the sidewall on which the overflow portion is provided. It is good also as forming in a long shape toward the other end side of a side wall.

  When the unit case is inclined, the overflow portion is positioned higher than the water surface, and dehumidified water may not be drained from the overflow portion. By forming the ribs in an elongated shape from one end to the other end where the overflow is provided, even in the case of an inclined unit case, drain the dehumidified water collected from the other end of the ribs. Can do.

(Embodiment 1)
Hereinafter, a dryer according to an embodiment of the present invention will be described with reference to the drawings. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.

  FIG. 1 is a side sectional view of a dryer according to Embodiment 1 of the present invention, and FIG. 2 is a perspective view showing a part of the dryer as seen from the rear.

  As shown in FIG. 1, the rotating drum 1 (drying chamber) is formed in a bottomed cylindrical shape, and a large number of water passage holes 2 are provided on the entire periphery. The water tank 3 accommodates the rotary drum 1 in a rotatable manner. A rotating shaft 4 (rotating center axis) is provided at the rotation center of the rotating drum 1 to support the rotating drum 1 and the axial center direction of the rotating drum 1 is inclined downward from the front side to the back side. Set up. A motor 5 attached to the rear surface of the water tank 3 is connected to the rotary shaft 4 to drive the rotary drum 1 to rotate in the forward and reverse directions.

  On the inner wall surface of the rotating drum 1, a plurality of protruding plates 6 for stirring clothes are provided. When the motor 5 is driven and the rotating drum 1 rotates, the protruding plate 6 lifts the clothes in the rotating drum 1 upward. When clothing is placed on top, it falls down due to gravity. In this way, the clothes in the rotating drum 1 can be stirred and dried uniformly.

  An opening located on the front side of the water tank 3 and provided on the upward inclined surface is covered with a lid 7 so as to be freely opened and closed. By opening the lid 7, the laundry can be taken in and out of the rotary drum 1 through the clothing entrance 8.

  The water tank 3 is supported in an anti-vibration manner so as to be swingable by the anti-vibration member 9 and the like below the main body 100. One end of the drainage path 10 is connected to the lower part of the water tank 3, and the other end of the drainage path 10 is connected to a drain valve (drainage means) 11 so that the washing water in the water tank 3 is drained. A water supply valve (water supply means) 12 supplies water into the water tank 3 through a water supply path 13.

  The control means 50 is arrange | positioned in the main body 100, and controls the motor 5, the heat pump apparatus 30, the air blower 40, etc.

  In the present embodiment, the rotary shaft 4 is provided in the tilt direction at the rotation center of the rotary drum 1, and the axial center direction of the rotary drum 1 is tilted downward from the front side toward the back side. However, they may be arranged in the horizontal direction.

  The motor 5 is composed of a direct current brushless motor or the like, and is controlled to rotate in the forward and reverse directions and the rotational speed by the control means 50 and the motor drive circuit 60, and is applied to the motor 5 by a signal from the current detection circuit 65. The load, that is, the amount of laundry is detected.

  A heat pump device 30 is provided to dry the clothes. A circulation air passage 43 is provided on the upstream side of the heat pump device 30 to guide the drying air from the rotating drum 1 and the water tank 3 to the heat pump device 30. A circulation air passage 41 is provided on the downstream side of the heat pump device 30, and guides drying air from the heat pump device 30 to the rotary drum 1 and the water tank 3. A blower 40 is provided on the downstream side of the heat pump device 30 to blow the drying air in the circulation air passages 41 and 43.

  3 is a perspective view of the heat pump device of the dryer according to Embodiment 1 of the present invention, FIG. 4 is a plan view showing a part of the heat pump device and unit case of the dryer, and FIG. 5 is a unit of the dryer. FIG. 6 is a perspective view showing a unit case of the dryer.

  The heat pump device 30 is accommodated in the unit case 31. The compressor 32, the radiator 33, the decompressor 34, and the heat absorber 35 are connected by a pipe 36 filled with a refrigerant 37 so as to circulate in this order.

First, the refrigerant 37 is heated to a high temperature and a high pressure by the compressor 32, and heat exchange with the air in the unit case 31 is performed by the radiator 33. The refrigerant 37 given heat is liquefied. After that, the pressure is reduced to low pressure by the decompressor 34, and heat exchange is performed again with the air in the unit case 31 by the heat absorber 35 placed next, and the heat is taken away to evaporate the refrigerant. The vaporized refrigerant 37 returns to the compressor 32 to form a series of refrigeration cycles.

  As the refrigerant 37 used in the heat pump device 30, a general refrigerant such as an HFC (hydrofluorocarbon) refrigerant, an HFO (hydrofluoroolefin) refrigerant, or a carbon dioxide refrigerant can be used.

  In the heat pump dryer, high-temperature and low-humidity air heated by the radiator 33 is sent into the rotary drum 1 through the circulation air passage 41 and the outlet 42 by the blower 40 connected to the housing outlet 31b. Create low-temperature, high-humidity air by contacting with a compress. This low-temperature, high-humidity air passes through the circulation air passage 43 and the housing inlet 31a, exchanges heat with the heat absorber 35, and dehumidifies by removing heat. The dehumidified air is heated again by the radiator 33, and the clothes can be dehumidified in a series of these cycles.

  The heat radiator 33 and the heat absorber 35 are provided with a heat radiator side end plate 33a and a heat absorber side end plate 35a in the direction in which the compressor 32 and the pressure reducer 34 are arranged. By connecting the radiator side end plate 33a and the heat absorber side end plate 35a, the radiator 33 and the heat absorber 35 are fixed close to each other in parallel. Moreover, the space where the compressor 32 and the decompressor 34 are placed is separated from the air path.

  As the material of the end plate, a general metal material such as an aluminum alloy or a general resin material such as polypropylene can be used.

  The dehumidified water is drained to the outside by a pump attached to the unit case 31. The pump can be attached to a place other than the unit case 31, and can be drained naturally without using the pump.

  In the present embodiment, for the purpose of downsizing the main body 100 or the like, the housing inlet 31a (inlet) of the unit case 31 into which the air of the unit case 31 flows in and the housing outlet 31b (outlet) from which air flows out are used. An angle difference is provided so that the air flow is curved in the housing. That is, the line segment Y connecting the housing inlet 31a and the heat absorber 35 and the line segment X connecting the housing outlet 31b and the heat radiator 33 are configured to form a predetermined angle of less than 180 degrees. When the angle is less than 180 degrees, it is easy to reduce the size when designing the arrangement of the circulation air passage 43 connected to the housing inlet 31a and the circulation air passage 41 connected to the housing outlet 31b.

  The space for arranging the compressor 32 and the decompressor 34 is provided outside the curve because it is a hindrance to the air path when provided inside the curve.

  Thereby, the dehumidified water generated in the heat absorber 35 is less likely to reach the heat radiator 33 through the heat absorber side end plate 35a and the heat radiator side end plate 33a, and the inlet and outlet of the unit case 31 without lowering the drying performance. It is possible to provide an angle.

In the unit case 31, a reverse support valve 44 (reverse support valve) that is opened by accumulated water such as dehumidified water and drains the accumulated water but prevents the outside air from being sucked is formed on the side wall 31 c that is the outside where the air path is curved. Is done. Further, the inner side of the curved side wall 31c is a negative pressure. For this reason, when the blower 40 is driven, the reversely supported valve 44 is in a closed position. Further, in the vicinity of the reverse support valve 44, a rib 45 extending upward from the bottom surface 31d of the unit case 31 and extending from the side wall 31c to the inside of the unit case 31 is formed. The bottom rib 45a extending upward from the bottom surface 31d is formed along the side wall 31c, and is formed over a width substantially equal to the installation width of the radiator 33 and the heat absorber 35. Unit case 3 from side wall 31c
Side wall ribs 45b that extend horizontally to the inside of 1 are configured integrally with bottom surface ribs 45a and are formed up to the same height position. The reversely supported valve 44 is enclosed by the bottom rib 45a and the side wall rib 45b. When the dehumidified water accumulates in the unit case 31, the water level rises at the height of the rib 45, and the dehumidified water is not drained from the reverse support valve 44.

  On the side wall 31e located near the radiator 33 and the heat absorber 35 on the side opposite to the side wall 31c where the overflow portion 44 and the rib 45 are formed, a drainage sensor 46 (drainage detection portion) that detects the water level of the dehumidified water. Is provided. The drainage sensor 46 includes a pair of electrodes 46a and 46b. In the present embodiment, the drainage sensor 46 is provided on the side wall 31e corresponding to the radiator 33 and the heat absorber 35 as shown in FIG. As another example, it is good also as installing in the electrode installation part 47 in which the compressor 32 is accommodated in the vicinity of the installation part 32a of the drainage pump 70.

  The height of the rib 45 surrounding the reverse support valve 44 is configured to be higher than the water level at which the drainage sensor 46 drives the drainage pump 70. Thereby, dehumidified water can be stored in the unit case 31 to some extent. In the present embodiment, the height of the rib 45 is formed to be lower than the height of the overflow hole that is closed by the reverse support valve 44.

  On the other hand, if the height of the rib 45 is too high, the water level of the dehumidified water becomes high in the event that a dewatering failure of the dehumidified water occurs. Furthermore, when dehumidified water enters the circulation air passage 41, the dried air contains moisture, and the dried product cannot be dried, resulting in a longer drying time. Therefore, the height of the rib 45 is limited to such a height that water does not enter the circulation air passage 41 and the blower 40.

  Further, the rib 45 is formed in a long shape from one end side of the side wall 31c provided with the reverse support valve 44 to the multi-end side of the side wall 31c. When the rib 45 is formed only in the vicinity of the periphery of the reverse valve 44, when the unit case 31 is inclined so that one end side is on the upper side, the dehumidified water is drained from the reverse valve 44 until the height of the rib 45 is exceeded. Not. The dehumidified water level reaches the rib 45 in the vicinity of the reverse valve 44 and is finally drained. Therefore, the rib 45 is formed in an elongated shape toward the multi-end side. In this case, since the multi-end side of the rib 45 exists at a low position, the dehumidified water enters the space surrounded by the rib 45 from the multi-end side. The dehumidified water that has entered the space surrounded by the ribs 45 is drained from the reverse support valve 44.

  The operation of the dryer configured as described above will be described below.

  When drying is started, the compressor 32 and the blower 40 are driven. Thereby, the air in the rotating drum 1 and the air in the circulation air passages 41 and 43 circulate while being dehumidified and heated.

  First, the drying air takes away moisture, further heats the dried product, and performs heat exchange. After being exhausted from the rotating drum 1, it passes through the lint filter 60. The lint filter 60 captures lint in the drying air. Thereafter, the air passes through the circulation air passage 43 and flows into the unit case 31 through the housing inlet 31 a of the unit case 31. The drying air that has flowed in from the housing inlet 31a is deprived of heat by the heat absorber 35, so that moisture is condensed and becomes low-humidity air. Then, it is heated by the radiator 33 and becomes high-temperature air. Then, it is discharged from the unit case 31 through the housing outlet 31b. The discharged air passes through the circulation air passage 41 and is again introduced into the rotary drum 1. In this way, drying is performed.

The dehumidified water dewed by the heat absorber 35 is drained by driving a drain pump 70 provided in a compressor housing portion that houses the compressor 32. Here, the amount of dehumidified water generated varies depending on the degree of drying. Therefore, when it is detected by the drain sensor 46 that the dehumidified water is accumulated, the drain pump 70 is driven to drain the dehumidified water. Further, an abnormality may occur in the drain pump 70, and the dehumidified water may not be drained. Alternatively, the drain sensor 46 may fail and the dehumidified water level may not be detected. In such a case, the dehumidified water is not drained. When the dehumidified water is not drained and reaches a level higher than the height of the rib 45, the dehumidified water gets over the rib 45 and is drained from the back support valve 44. Even when the unit case 31 is inclined, the dehumidified water flows from the multi-end side of the rib 45 over the height of the rib 45 and flows into the space surrounded by the rib 45, so that the dehumidified water is drained from the back valve 44. can do.

  In this embodiment, the heat pump device 30 is installed at the lower part of the main body 100, but it may be installed at the upper part. Moreover, although the air blower 40 is directly connected with the heat pump apparatus 30, you may install in the remote place.

  In addition, in this Embodiment, although illustrated as a washing dryer, it is not restricted to this, It is good also as a dryer. Moreover, although illustrated as a drum-type dryer, a vertical washing dryer may be used. In short, the present invention can be applied to any drying system in which a heat pump unit is provided and the radiator and the heat absorber are arranged close to each other.

  As described above, the dryer of the present invention is a heat pump in which the rotary drum 1 that accommodates an object to be dried, the compressor 32, the radiator 33, the decompressor 34, and the heat absorber 35 are connected by the pipe 36 filled with the refrigerant. The apparatus 30, a unit case 31 that houses the heat pump device 30, a blower 40 that circulates drying air in the circulation air passages 41 and 43, and a drainage pump 70 that drains dehumidified water, The side wall 31c is provided with a reverse valve 44 for draining overflowing dehumidified water. The bottom surface of the unit case 31 extends upward from the bottom surface 31d and extends from the side wall 31c to the inside of the unit case 31. In addition, a rib 45 is provided to surround the reverse support valve 44.

  Thereby, a certain amount of accumulated water can be allowed while having a function of draining dehumidified water that has accumulated. As a result, the driving frequency of the drain pump 70 can be lowered.

  In the upper machine configuration, it is preferable that a drainage sensor 46 for detecting overflow of dehumidified water is further provided, and the upper end of the rib 45 is formed to be higher than the water level detected by the drainage sensor 46.

  Accordingly, when the water level detected by the drainage sensor 46 is reached while accumulating a certain amount of dehumidified water, it can be detected that the dehumidified water is accumulated and the drainage pump 70 can be driven. As a result, it is possible to prevent the dehumidified water from being drained out of the unit case 31 from the reverse support valve 44 before the drain sensor 46 detects it.

  In the above configuration, the reverse support valve 44 is provided on one end side of the side wall 31c of the unit case 31, and the rib 45 is a side wall on which the reverse support valve 44 is provided from one end side of the side wall 31c on which the reverse support valve 44 is provided. It may be formed in a long shape toward the other end of 31c.

  When the unit case 31 is inclined, the reverse support valve 44 is positioned higher than the water surface, and the dehumidified water may not be drained from the reverse support valve 44. By forming the rib 45 in an elongated shape from one end side to the multi-end side where the reverse support valve 44 is provided, dehumidified water accumulated from the multi-end side of the rib 45 is allowed to flow even in the case of an inclined unit case. It can be drained.

  As described above, the present invention is useful as a dryer because it has a function of draining wet water and can allow a certain amount of accumulated water in the unit case.

1 Rotating drum (drying room)
3 Water tank (drying room)
5 Motor 30 Heat pump device 31 Unit case 31a Case inlet (inlet)
31b Case outlet (outlet)
31c Side wall 31d Bottom surface 32 Compressor 33 Radiator 33a Radiator side end plate (end plate)
35 heat absorber 35a end plate on the heat absorber side (end plate)
40 Blower 41, 43 Circulating air passage (air passage)
44 Reverse valve (overflow part)
45 Ribs 45a Bottom ribs 45b Side wall ribs 46 Drainage sensor (drainage detector)
70 Drain pump 100 Body

Claims (3)

A drying chamber for accommodating a drying object;
A heat pump device in which a compressor, a radiator, a decompressor and a heat absorber are connected by a pipe filled with a refrigerant;
A unit case for housing the heat pump device;
A blower for blowing the drying air in the drying chamber;
A drainage pump for draining dehumidified water,
The side wall below the unit case is provided with an overflow portion for draining the dehumidified water that has overflowed,
A dryer provided on the bottom surface of the unit case with a rib extending upward from the bottom surface and extending from the side wall to the inside of the unit case so as to surround the overflow portion. It is further equipped with a drainage detector that detects overflow of dehumidified water,
The dryer according to claim 1, wherein an upper end of the rib is formed to be higher than a water level detected by the drainage detection unit. The overflow portion is provided on one end side of the side wall of the unit case,
The said rib is formed in an elongate shape from the said one end side of the said side wall in which the said overflow part is provided toward the other end side of the said side wall in which the said overflow part is provided. Dryer.